gstools_cython.variogram.unstructured

gstools_cython.variogram.unstructured(const double[:, :] f, const double[:] bin_edges, const double[:, :] pos, str estimator_type='m', str distance_type='e', num_threads=None)

Omnidirectional variogram estimator.

Parameters:

• f (double[:, :]) – unstructured random field

• bin_edges (double[:]) – edges for the variogram bins

• pos (double[:, :]) – the position (d,n) tuple with d dimensions and n points.

• estimator_type (str, optional) –

  the estimator function, possible choices:

  • “m”: the standard method of moments of Matheron

  • “c”: an estimator more robust to outliers by Cressie

  Default: “m”

• distance_type (str, optional) –

  dinstance function type, possible choices:

  • “e”: euclidean distance

  • “h”: haversine distance for lat-lon coordinates

  Default: “e”

• num_threads (None or int, optional) – number of OpenMP threads, default: None

Returns:

• variogram (double[:]) – estimated variogram

• counts (np.int64_t[:]) – counts of samples per bin